Hello, for a change something different (from the Ruby Advent Calendar 2017 ;-)) - yesterday’s Vienna.rb talk notes about Blockchain! Blockchain! Blockchain! - Build Your Own Blockchains in Ruby from Zero (Scratch), Yes, you can in 20 lines or ruby with proof-of-work crypto hashing and more. Talk notes incl. breaking news about CryptoKitties (Yes, Cute Little Cartoon Cats) on the Blockchain - the latest (and greatest) investment opportunity. Join the movement and revolutionize the world one block at a time. Cheers.